Function empty

datafusion/optimizer/src/analyzer/type_coercion.rs:1327–1332

()

    use datafusion_sql::TableReference;

    fn empty() -> Arc<LogicalPlan> {
        Arc::new(LogicalPlan::EmptyRelation(EmptyRelation {
            produce_one_row: false,
            schema: Arc::new(DFSchema::empty()),
        }))
    }

    fn empty_with_type(data_type: DataType) -> Arc<LogicalPlan> {
        Arc::new(LogicalPlan::EmptyRelation(EmptyRelation {